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thinkbaby's Thinkster features a No Spill Straw with their cross cut design that won't spill when held upside down. The soft silicone, medical grade straw gives your child an easy transition from a sippy cup. The swivel top is easy to open and close to reduce spills when traveling. It also keeps the straw clean. This is a perfect cup for children from 16 to 48 months.

The Thinkster is top rack dishwasher safe but take care not to wipe the measurement markings. thinkbaby does not use lead in their paint, which is what predominately makes paint stick. It is best to use a dishwasher detergent that is free of chlorine.

Before first use, thinkbaby recommends sterilizing the Thinkster in boiling water for 2-5 minutes.

thinkbaby's products address the growing concern over plastics leaching toxic chemicals. Using a team of physicians and scientists, thinkbaby has found safer materials to use for all of their baby products. Because research has linked many chemicals in common use to cancer and hormone disruption, thinkbaby does extensive product testing to bring you the safest products available.

All thinkbaby products are FREE of BISPHENOL-A (BPA), PVC, LEAD, PTHALATES, NITROSAMINES and biologically toxic chemicals. Their products have been tested globally by third-party labs and are also packaged in recycled materials. They are made of Polypropylene (PP), which is a medical grade plastic and can easily be recycled at most recycling locations.